Governor.



GOVERNOR.

, APPLICATION FILED JUNE 14, 1901.

2 SHEETS-SHEET 1.

no MODEL.

wzzwes PATENTED MAR. 10, 1903.

R. OONRADEIL.

GOVERNOR.

APPLICATION FILED JUNE 14, 1901.

2 sums-sum 2.

39 MODEL.

UNITED STATES PATENT Orrrcn.

RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 722,564, dated March 10, 1 903.

Application filed June 14, 1901. Serial No. 64,564. (No model.)

To aZZ whom it may concern:

Be it known that I, RUDOLPH CONRADER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsyl- Vania, have invented certain new and useful Improvements in Governors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to throttling-governors; and it consists in certain improvements in the construction thereof, as will be hereinafter fully described, and pointed out in the claims.

The invention is illustrated in the accompanying drawings, as follows:

Figure 1 shows a side elevation of the governor. Fig. 2 shows an end elevation. Fig. 3 shows a View, partly in section, from the 0pposite side of the governor from that shown in Fig. 1. Fig. 4 shows a detail of an alternative construction.- Fig. 5 shows a detail of the stop mechanism.

A marks the valve-chamber, in which there is a throttling-valve of the ordinary construction. Extending from this valve is the valvestem B. Secured to the valve-chamber A isthe frame 0. This is provided with the two uprights c and c. Extending from the upright c is the arm 0 in which is journaled the drive-shaft E. The drive-pulley D is. fixed on the drive-shaft E, and the gear F is fixed on the inner end of the drive-shaft E. The gear F drives the gear G, which turns the carrier H. The weights I I are secured to the carrier and rotate with it. They are connected with the usual mechanism to the valvestem B, so as to communicate an outward movement of the weights to the stem. The carrier is journaled in the upright o of the frame. Extending from the uprights c o are the lugs 0 c Journaled in these lugs is the lever-rod J. Extending inwardly from the rod J is the leverj. The leverj engages the spools b on the valve-stem. Extending outwardly from the rod is the lever-arm j and on this arrnj is a downwardly-extending guide j A screw 9' is arranged in a guidej provided with the hand-wheel f, by which the screw 3' may be turned. A jam-nutj is also provided, by which the screw 3' may be locked in any set position. A cross-guide j has on it a nut which is operated by the screwj. The cross-guide is carried in the guide j Arranged in the cross-guide is the screwj This is provided with the ordinary handwheel, by which it may be operated. A nut 7' is arranged in the guide 7' and operated by the screw. An extension-spring K is secured to the nut j and an arm L. The arm L is carried by the guide 0 extending from the frame. A screw on the stem L operates the arm L, so that the arm L may be adjusted on the guide to any position desired. By following the mechanism it will readily be seen that the force of thespring Kforces the lever j upwardly, and the connecting mechanism between the weights and stem B is such that the stem B is forced downwardly with an outward movement of the weights. The weights, therefore, form the centrifugal element of the governor and the spring K the centripetal element.

It is desirable that a change in the initial tension of the spring may be had in order that a variation in the speed of an engine which the governor controls may be had. This may be accomplished by varying the position of the arm L. The effect may also be accomplished by varying the position of the crossguide 7' on the guide f or, in other words, varying the length of the arm extending from the rod J so that the spring K operates with a different leverage. A changing of the arm has a still different effect, however, than merely changing the spring, because changing the arm changes the arc of movement of thenut j so that the change in the spring tension with a movement of the governor is varied. It is also desirable to control the change or ratio of change in the spring tension by amovement of the governorthat is, so that the force exerted by the spring may increase with a movement'of governor to a greater or less extent than the change of the force in the centrifugal element. This is accomplished by changing the relative position of the nut j to the rod J. By turning the screw j the nut may be placed initially directly under the rod J, so that with an upward movement of the lever j the spring K carries the arm j j forwardly and upwardly, the lever-arm decreasing in length with a further movement, so that the force of the spring decreases not only by reason of its contraction, but also by reason of the shortening of the arm. On the other hand, the initial position of the nutj" may be such that as it is drawn forward by the spring K it approaches a position directly under the rod J or the position giving to the arms 7' j its greatest length, and so moved the loss of force in the spring by reason of its contraction is compensated for to some extent by reason of the increase in the length of the arm of the lever. These different variations may be ac complished in order to give to the engine the regulations under difierent loads desired. By this arrangement the speed of the engine may be controlled so as to increase with an increase in load or decrease in load with a uniform speed.

By using the extension-spring a much nicer adjustment may be had than with the compressor-spring, and it is easier to get a uniform result than with the compression-spring, because there are no frictional resistances on the spring itself to overcome. A much longer extension-spring may be used than the compression-sprin g. By arranging these springs in the direction of the arm j the mechanism may be kept in the smallest possible compass with the longest range of spring convenient. It also gives a verydesirable arrangement for adjusting the length of the arm as heretofore described.

Arranged on the rod J is a sawyer-lever j. It is provided for the usual purposes of such levers.

I also provide a safety-stop device. It is as follows: A stud M is secured to the lug c Journaled on the stud M is a sleeve M. A torsion-spring m is coiled on the stud and tensioned between the stud and sleeve M. Extending from the sleeve M is an arm m. On the outer end of the arm m is a roller m The roller m normally rests upon the flange m which extends from the collar m. The

collar m is journaled on the end of the arm 0 Clamped on this collar by means of the screw m is a ring m Extending from this ring is the pulley-arm m". A rider-pulley M is journaled on the arm m in position to ride on the governor-belt. The angle of the arm m may be arranged to bring the pulley -to its proper position by means of the clamp m". Extending downwardly from thesleeve M is an arm m and arranged on the sawyerlever is a rollj The roll j is arranged in the path of the arm m With a movement of the rider-pulley M out of its normal position the flange m is moved from under the roll m The spring m is of sufficient strength to overcome the force of the spring K, and, operating through the arm m the sawyerlever, rod J, and arm 7", it forces the valvestem, with the valve, downwardly, closing off the steam-supply.

The use of a spring-actuated safety-stop is very desirable, especially in that class of governors which are used in traction-engines, because where a weight is used the jar of the engine is liable to get the safety mechanism out of position. It also accomplishes the result in much less space than with the weight or mechanism heretofore used, and by the use of the torsion-spring the spring may be put on a pin on which the safety mechanism is journaled.

What I claim as new is-- 1. In a throttling-governor, the combination of a valve-stem; a centrifugal element operating upon said stem; a bell-crank lever, one arm of which is arranged to operate upon said stem; and an extension-spring connected with the other arm of the bell-crank lever, said spring extending along the arm of the bell-crank lever in engagement with the stem,

past the valve-stem; and means for securing the end of the spring opposite the bell-crank lever.

2. In a throttling-governor, the combination with a valve-stem; the centrifugal element operating upon said stem; a stem-arm of a bell-crank lever operating upon said stem; a spring-arm of said bell-crank lever extending from said stem-arm; an extension-spring connected with said spring-arm and extending in approximately the direction of the stemarm.

3. In a throttling-governor, the combination with the valve-stem; of the centrifugal element operating upon said stem; a stemarm of a bell-crank lever operating upon said stem; a spring-arm of said bell-crank lever extending from said stem-arm; an extensionspring connected with said spring-arm and extending in approximately the direction of the stem-arm; and means for adjusting the initial tension of said spring.

4:. In a throttling-governor, the combination of the valve-stem; a centrifugal element operating upon said stem; a lever operating upon said stem; an extension-spring connected with said lever and tensioned to form a centripetal element of the governor; a sliding arm connected with the opposite end of said spring; a guide on which said arm may be adjusted for varying the tension of the spring; and means for adjusting said arm on said guide.

5. In a throttling-governor, the combination of a valve-stem; a bell-crank lever having one arm operating upon said stem; a springarm comprising a screw, and means for lock ing said screw in position; a nut upon said screw; a spring extending from said nut for forming the centripetal element of the governor and a centrifugal element operating upon said stem independently of the lever.

6. In a throttling-governor, the combination of a valve-stem; a bell-crank lever having tripetal element of the governor; said screw forming a bell-crank lever with the stem-arm; and the nut by its change in position on the screw changing the length of said arm, and a centripetal element operating upon said stem independently of the bell-crank lever.

7. In a throttling-governor, the combination of the valve-stem the centrifugal element operating upon said stem; the lever-rod, J; the lever y", extending from said rod and engaging said stem; the arm, extending from said rod; means for lengthening or shortening said arm; and the extension-spring, K, connected with said arm, approximately in the direction of the arm,j.

8. In a throttling-governor, the combination of the valve-stem the centrifugal elem ent operating upon said stem; the stem-arin of a bell-crank lever engaging said stem; a springarm extending from said stem-arm; a spring connected with said arm and extending approximately in the direction of the stem-arm of said lever; and-means for shifting the connection of the spring with said spring-arm to vary the direction of the spring-arm relatively to the spring for varying the ratio of change in the force of the spring with the operation of the governor.

9. In a throttling-governor, the combination of a valve-stem; the centrifugal element operating upon said stem; the stem-arm of a bell-crank lever engaging said stem; aspringarm extending from said lever; an extensionspring connected with said arm and extendingapproximatelyin the direction of the stemarm of said lever; and means for shifting the connection of the spring with said spring-arm, so as to vary the direction of the spring-arm relatively to the stem-arm for varying the ratio of change in the force exerted by the spring with the operation of the governor.

10. In a throttling-governor, the combination of the Valve-stem the centrifugal element operating upon said stem; the stem-arm of a bell-crank leverengaging said stem; a springarm opposed to said stem-arm; a spring con nected with said spring-arm and extending approximately in the direction of the stem arm; means for varying the length of said spring-arm; and means for varying the direction of said spring-arm relatively to the stemarm to vary the angle at which the spring operates relatively to said arm to vary the ratio of change in the force exerted by the spring with a movement of the arm in the operation of the governor.

11. In a throttling-governor, the combination of the valve-stem; a pivoted rod; an arm extending from said rod engaging said stem; a centripetal element operating upon said stem independently of the arm engaging said stem; a saWyer-lever upon said rod; a springarm extending from said rod; an extensionspring secured to said spring-arm and ten sioned to form the centripetal element of the governor.

12. In a throttling-governor, the combina: tion of the valve-stem, B; the centrifugal element operating upon said stem; the rod, J; the arm, j, extending from the rod, J, and engaging the stem, B; the sawyer-lever on 4 the rod, j; a bell-crank-lever arm extending from the rod, J, at an angle to the arm,j; the extension-spring, K, secured to the bellcrank lever and extending in the direction approximately parallel with the arm, j; ad-

' jnstable means for securing the opposite ends of the spring.

13. In a throttling-governor, the combination of the valve-stem, B; the centrifugal element operating upon said stem; the rod J; the arm,j, extending from the rod, J, and engaging the stem, B; the Sawyer-lever on the rod, J; a bell-crank arm extending from the rod, J, at an angle to the arm,j; the extension-spring, K, secured to the bell-crank lever and extending in'the direction approximately parallel with the arm,j; adjustable means for securing the opposite ends of the spring; means for varying the angle of the bell-crank arm to the arm,j'.

'14. In a throttling-governor, the combination of the valve-stem; the centrifugal element arranged to operate upon said stem; the rod, J; an arm extending from said rod and operating upon said stem; means exerting force for the centripetal element arranged to operate upon said rod, J; a safety-stop comprising a spring for operating upon the rod, J, to efiect a closing of the valve; a rider-pulley for the driving-belt; means for holding said spring out of action with the rider-pulley in its normal position; and means for holding said spring out of action with the rider-pulley in its normal position and for releasing said spring With a movement of the rider-pulley away from the roll.

15. In a throttling-governor, the combination with the govern or mechanism; of a safetystop comprising the stud, M; the collar, l upon the stud; the torsion-spring, 'n, tensioned on the stud and said collar; the arm, m extending from said collar and arranged to close the valve by its movement; the arm, m, extending from the collar; the flange, m for supporting said arm in a normal position; a rider-pulley connected With the flange, m and arranged to move said flange out of position under the arm, m, with a movement of the rider-pulley away from the normal.

16. In a throttling-governor, the combination of the stem, B; centrifugal element operating upon said stem; the rod, J; the arm, 7", extending from the rod engaging the stem, B; the arm, 7' 7' extending from the rod, J; means for varying the length of said arm; means forvarying the angle of said arm to the arm, j; the extension-spring, K, secured to the arm, j j the arm, L, for securing the opposite end of the spring; means for adjusting the arm, L; a Sawyer-lever, 7', on the rod,

J; the stud, M; collar, M, jonrnaled on the under the arm with a movement of the riderstud; the spring, 0%, tensioned on the stud pulley away from the normal. to and collar; the arm, m extending from the In testimony whereof I aflix my signature collar and including in its path the sawyerin presence of two witnesses.

lever; the arm, m; the flange, m for sup- RUDOLPH OONRADER. porting said arm with the parts in normal; Witnesses: the rider-pulley connected with the flange, JUSTIN P. SLOGUM,

m and arranged to move said flan ge out from Q RENA F. LANZA. 

